The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2014
Filed:
Sep. 29, 2011
Rongrong Bai, Beijing, CN;
Jianting Wang, Beijing, CN;
Duanduan Jian, Beijing, CN;
Wenjing Wang, Beijing, CN;
Jing Cao, Rancho Santa Margarita, CA (US);
Rongrong Bai, Beijing, CN;
Jianting Wang, Beijing, CN;
Duanduan Jian, Beijing, CN;
Wenjing Wang, Beijing, CN;
Jing Cao, Rancho Santa Margarita, CA (US);
Beijing KT Micro, Ltd., Beijing, CN;
Abstract
A power supply device, a processing chip for a digital microphone and related digital microphone are described herein. In one aspect, a power supply device includes: at least two cascaded low-dropout linear regulators. In another aspect, a processing chip for digital microphone includes a processing module and a power supply module, wherein the power supply modules includes at least two cascaded low dropout linear regulators. In another aspect, a digital microphone includes a microphone and a processing chip, wherein the processing chip includes a processing module and a power supply module, wherein the power module includes at least two cascaded low-dropout linear regulators. Embodiments described herein provide a power supply device with higher PSRR.